Collection<KnowledgePackage> knowledgePackages = kbuilder.getKnowledgePackages();
kbase.addKnowledgePackages( knowledgePackages );
for ( KnowledgePackage kPackage : knowledgePackages ) {
kbase.removeKnowledgePackage( kPackage.getName() );
}
kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newByteArrayResource( rule2.getBytes() ), ResourceType.DRL );
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );